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Carbon nanofiber loaded nickel-based catalytic material containing zinc oxide and preparation method thereof

A technology of nano-carbon fiber and catalytic materials, which is applied in the field of hydrogenation, can solve problems affecting product selection performance, etc., and achieve the effects of easy regulation, improved catalytic selectivity, and difficult aggregation

Active Publication Date: 2017-08-08
LANZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to have a relatively firm interaction between the organometallic framework and the single-walled carbon nanotubes, this method needs to acidify the single-walled carbon nanotubes before use, which affects the selectivity of the product

Method used

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  • Carbon nanofiber loaded nickel-based catalytic material containing zinc oxide and preparation method thereof
  • Carbon nanofiber loaded nickel-based catalytic material containing zinc oxide and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A zinc oxide-containing nano-carbon fiber-loaded nickel-based catalytic material comprises the following raw materials in weight percentages: calculated as oxides, 48% of zinc oxide, 44% of nickel oxide, and 8% of carbon fiber.

[0030] Its preparation method comprises the following steps:

[0031] (1) Preparation of zinc-nickel bimetallic organic framework materials:

[0032] (a) dissolving zinc nitrate and nickel nitrate in N-N dimethylformamide with a molar ratio of 1.8:1 to form a solution containing zinc and nickel;

[0033] (b) dissolving terephthalic acid in N-N dimethylformamide to form a terephthalic acid solution;

[0034] (c) Add the zinc-nickel solution dropwise to the terephthalic acid solution under stirring conditions, and continue stirring for 0.5h after the dropwise addition is completed to generate the product;

[0035] (d) Suction filtration and washing were repeated for 3 times on the generated product, and vacuum drying was obtained.

[0036] (2)...

Embodiment 2

[0041] A zinc oxide-containing nano-carbon fiber-loaded nickel-based catalytic material comprises the following raw materials in weight percentage: calculated as oxides, 38% of zinc oxide, 45% of nickel oxide, and 17% of carbon fiber.

[0042] Its preparation method comprises the following steps:

[0043] (1) Preparation of zinc-nickel bimetallic organic framework materials:

[0044] (a) Zinc acetate and nickel acetate are dissolved in N-N dimethylformamide at a molar ratio of 1.5:1 to form a solution containing zinc and nickel;

[0045] (b) dissolving terephthalic acid in N-N dimethylformamide to form a terephthalic acid solution;

[0046] (c) Add the zinc-nickel solution dropwise to the terephthalic acid solution under stirring conditions, and continue stirring for 1 hour after the dropwise addition is completed to generate the product;

[0047] (d) Repeat suction filtration and washing for 5 times to the generated product, and vacuum dry to obtain the final product.

[0...

Embodiment 3

[0053] A zinc oxide-containing nano-carbon fiber-loaded nickel-based catalytic material includes the following raw materials in weight percentages: calculated as oxides, 28% of zinc oxide, 46% of nickel oxide, and 26% of carbon fiber.

[0054] Its preparation method comprises the following steps:

[0055] (1) Preparation of zinc-nickel bimetallic organic framework materials:

[0056] (a) zinc carbonate and basic nickel carbonate are dissolved in N-N dimethylformamide at a molar ratio of 2.5:1 to form a solution containing zinc and nickel;

[0057] (b) dissolving terephthalic acid in N-N dimethylformamide to form a terephthalic acid solution;

[0058] (c) Add the zinc-nickel solution dropwise to the terephthalic acid solution under stirring conditions, and continue stirring for 0.5h after the dropwise addition is completed to generate the product;

[0059] (d) Suction filtration and washing were repeated twice for the generated product, and vacuum drying was obtained.

[006...

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Abstract

The invention relates to the technical field of hydrogenation, specifically relates to nickel-based catalyst and more specifically relates to a carbon nanofiber loaded nickel-based catalytic material containing zinc oxide and a preparation method thereof. The nickel-based catalytic material is prepared from the following raw materials in weight percentage: 15 to 80% of zinc oxide, 15 to 70% of nickel oxide and 5 to 40% of carbon fiber according to oxide. According to the nickel-based catalytic material disclosed by the invention, a double-metal organic framework is coated by nanofiber high polymer through an electrospinning technique, and metal ingredient content is easy to regulate. As the metal organic framework material is of a topological structure, metal in the carbonized catalytic material has stronger interaction, and the prepared carbon nanofiber loaded nickel-based catalytic material has good dispersion and is not prone to gathering. The prepared catalytic material with the carbon nanofiber as a substance is of a mesoporous structure, is beneficial to reactant diffusion and accordingly improves catalytic selectivity.

Description

technical field [0001] The invention relates to the technical field of hydrogenation, in particular to a nickel-based catalyst, and more specifically to a zinc oxide-containing nano-carbon fiber supported nickel-based catalytic material and a preparation method thereof. Background technique [0002] Nickel-based catalytic materials are often used in the field of hydrogenation, such as the selective hydrogenation of dienes, alkynes and alkenyl aromatics, and the saturated hydrogenation of olefins and aromatics. The hydrogenation activity, selectivity and stability of catalytic materials can be regulated by optimizing the dispersion properties of metallic nickel in catalytic materials. At present, the common preparation methods of this material include impregnation method, mechanical mixing method, co-precipitation method and peptization method. When using common preparation methods, in order to optimize the dispersion performance of nickel, one method is to promote the forma...

Claims

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Application Information

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IPC IPC(8): B01J23/80B01J35/10C08G83/00D01F9/22D01F9/21D01F1/10D01D5/00
CPCD01D5/0007D01D5/0061D01D5/0092D01F1/10D01F9/21D01F9/22C08G83/008B01J23/002B01J23/80B01J35/613B01J35/615B01J35/651B01J35/647
Inventor 汪宝堆吴杰陈凤娟丁二丽
Owner LANZHOU UNIVERSITY
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